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Perturb

per-turb′, v.t. to disturb greatly: to agitate—also Per′turbate.—adj.Pertur′bable, that can be agitated or confused.—ns.Pertur′bance, Perturbā′tion, act of perturbing or state of being perturbed: disquiet of mind: irregular action, esp. (astron.) the disturbance produced in the simple elliptic motion of one heavenly body about another by the action of a third body, or by the non-sphericity of the principal body; Pertur′bant, any disturbing thing.—adjs.Perturbā′tional; Pertur′bative.—n.Pertur′batory, the power of deflecting the divining-rod by magnetic influence.—p.adj.Perturbed′.—adv.Perturb′edly.—ns.Pertur′ber, Perturbā′tor:—fem.Per′turbātrix. [Fr.,—L. perturbāre, -ātum—per, thoroughly, turbāre, to disturb—turba, a crowd.]